“The truth is I’ve only told two people. It’s not that many,” Sophie said in interviews.

So then who does know? Her fiance Joe Jonas is one of them, she said.

Hopefully he can be trusted to have and to hold the secret for now.

The eighth and final season returns to HBO on April 14. It's expected to be among the most-watched series finale in TV history, with still so many lingering questions that fans want answered. Questions like, who will rule when all is said and done?